Least Common Multiple (LCM) of 68 and 84
The least common multiple (LCM) of 68 and 84 is 1428.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 68 and 84?
First, calculate the GCD of 68 and 84 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 68 ÷ 84 = 0 remainder 68 |
| 2 | 84 ÷ 68 = 1 remainder 16 |
| 3 | 68 ÷ 16 = 4 remainder 4 |
| 4 | 16 ÷ 4 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 153 and 107 | 16371 |
| 107 and 171 | 18297 |
| 181 and 30 | 5430 |
| 64 and 39 | 2496 |
| 143 and 13 | 143 |